Steam superheating apparatus.



PATBNTED MAY 10, 1904.

G. L. SIMPSON. STEAM SUPERHEATING APPARATUS.

APPLICATION FILED JAN. 7, 1904.

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No. 759,832. PATEN'I'ED MAY 10, 1904.

c. L. SIMPSON.

STEAM SUPERHEATING APPARATUS.

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STEAM SUPERHEATING APPARATUS.

APPLICATION FILED JAN. 7, 1904. N0 MODEL. 5 SHEETS-SHEET 3.

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STEAM SUPERHEATING APPARATUS.

APPLICATION FILED JAN. 7. 1904. NO MODEL.

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No. 759,832. PATENTED MAY 10, 1904.

G. L. SIMPSON.

STEAM SUPERHBATING APPARATUS.

APPLIUATIDN FILED JAN. 7, 1904. N0 MODEL.

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UNITED STATES Patented May 10, 1904.

PATENT OFFICE.

CHARLES LIDDELL SIMPSON, OF LONDON, ENGLAND, ASSIGNOR OF ONE-HALF TO JAMES SIMPSON & OOMPAN Y, LIMITED, OF LONDON,

ENGLAND.

STEAM SUPERH EATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 759,832, dated May 10, 1904.

Application filed January '7, 1904. Serial No. 188,111. (No model.)

To (all whom, it may concern:

Be it known that 1, CHARLES LIDDELL SIMP- soN, a subject of the King of Great Britain, rcsiding at 24 Portland Place, London, England, have invented certain new and useful Improvements in and Relating to Steam Superheating Apparatus, of which the following is a specification.

This invention relates to superheaters for use in conjunction with steam-generators or when arranged independently and separately heated, and is designed to facilitate combination and construction and to attain increased strength, simplicity,endurance,and efficiency.

The improved superheater may be connected with the steam-generator by the usual pipe connections. The connections are made to an inlet-pipe and outlet-pipe and through these to and from a series of tubes and connecting-bends of an improved construction to be described.

Figure 1 is an elevation, partly in section, of a superhcater and its inlet and outlet pipes. Fig. 2is a front view, partly in section and broken away, for the convenience of the drawing of a Cornish or Lancashire boiler and its setting and the connections and arrangement of my improved superheater to the same. Fig. 3 is a plan view of Fig. 2. Fig. i is an end view of Fig. 2. Fig. 5 shows the arrangement of a similar type of superheater as fitted to a water-tube boiler, the drawing being partly in section and broken away for the convenience of the drawing. Fig. 6 is an end view of Fig. 5. Fig. 7 is an enlarged sectional detail of one of the tubes and a portion of one of the U-bends and the method of jointing.

The inlet-pipe a is preferably produced from steel with flanges a at each end, the diameter of the tube being cylindrical for the greater portion of its length and then being continued or widened out to the point where it makes a junction with an end plate or flange b, which end plate makes again a junction with the ends of the first set of tubes g. The tubes g at their opposite ends are fitted into another end plate 0, and this end plate makes a junction by flanges on the respective parts with one end (1' of a return or U-shaped bend (Z, and this bend at its other end is in like'manner connected to another sctoi tubes, and so on in series or parallel or other groups to the end of the complete combination or construction where the last end plate makes junction with i an outlet c of like construction to theinletpipe referred to.

The inlet and outlet pipes c and 0, respectively, and the end plates 7) of the tube multiples or sections and the end plates 7) and the bends (Z are connected, respectively, by bolts passing through clearing-holesfin the flanges and are secured by nuts or by equivalent means.

The inlet and outlet pipes (I. and e I preferably make of steel, the end plates bot stamped steel, the tubes g of solid drawn steel, and the end or return bends (Z of steel, or they could be made of any other convenient metal.

The return or U bends (Z areoi semicircular tube form, and when arranged vertically the bottom bend has a foot or ribs 0? and flangesupport formed on it.

The end plates or flanges 7) on the various sections are prepared to receive the tubes g by boring parallel holes through them and to about one-half the thickness of the plates. Each hole is countersunk to receive the bellmouth, which is ultimately formed on the end of each tube. This countersink I prefer to make of a bell-mouth shape, as shown more particularly by Fig. 7, instead o'f'the usual conical form.

The tubes g are expanded into the end plates 7) and as a precautionary measure against being drawn out are afterward bell-mouthed by any convenient known means, such as by the aid of a pneumatic hammer, to fit the bellmouth formed in the end plates, while after forming the bell-mouth they should be again slightly expanded to insure that each joint is perfect.

Between the end. plates Z) and each inlet or outlet pipe a or c or return-bend (Z a joint is made by means of an annular projection or spigot b on the one easily fitting into a recess or socket (Z in the other, with a corrugated or like steel fitting or joint ring Z; interposed, as shown by Fig. 7.

Figs. 2 to 4 show the invention applied in conjunction with a Lancashire or Cornish boiler and Figs. 5 and 6 with a water-tube boiler.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. A tube multiple for a steam-superheater consisting of a plurality of tubes, and a pair of flanged end plates each provided with a plurality of bell-mouth-shaped and countersunk holes for the ends of said tubes, each tube at each of its ends being tightly expanded into its respective hole, and each end plate further provided on its outer face with one member of a spigot and socket joint and holes for means to receive suitable connecting devices for coupling said plates with an adjacent part of a construction.

2. A tube multiple for asteam-superheater, consisting of a flanged end plate provided with a plurality of bell-mouth-shaped countersunk holes, a plurality of tubes having one end thereof expanded in said holes, a U-shaped flanged return metal pipe-bend, and means engaging the flange of the pipe and the flange of the plate for connecting the pipe to the plate.

3. A superheater for steam consisting of a plurality of flanged metal end plates having countersunk bell mouthed holes therein, a number of sets of tubes corresponding to each pair of end plates, one end of each such tubes being expanded into a hole in its corresponding end plate to form a tight joint, a U-shaped flanged return metal pipe-bend, a spigot and socket joint between the corresponding flange of the end plate and the flange of the U-shaped pipe connections between each end-plate flange and the corresponding flange of the U-shaped return-bend, and inlet and ,outlet pipes to connect the series of tube multiples with the source of supply and delivery of the steam.

4. A steam-superheater, comprising a plurality of tube multiples, each multiple consisting of a pair of flanged end plates, each provided with a plurality of bell mouthshaped countersunk holes, and said multiple further consisting of a plurality of tubes having their ends expanded in the openings of the flanged plates, flanged tubular inlet and out let pipes, each provided with means for connecting to a source of steam supply and delivery, said inlet and outlet pipes, respectively, being cylindrical throughout the greater part of their length and Widening toward their ends, means for connecting the flanges of the pipes to the flanges of the end plates of the multiples, a flanged U-shaped pi pe-bend for establishing communicationbetween the multiples, spigot and socket joints between the U- shaped pipes and the flanged plates of the multiple, and means for connecting the flanges of the U-shaped pipes with the corresponding flanges of the multiple plates.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES LIDDELL SIMPSON.

W'itnesses:

W. H. DANVILLE, THoMAs DUNTEAD SIMPsoN. 

